Home / 12,179,366.40-18,273,715.20-11,988,076.80

Finding the Fourth Proportional to 12,179,366.40, 18,273,715.20 and 11,988,076.80

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Solution

The fourth proportional to 12,179,366.40, 18,273,715.20 and 11,988,076.80 is: 17,986,707.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179,366.40 : 18,273,715.20 = 11,988,076.80 : x
  2. Step 2: Convert to fraction form
    12,179,366.40/18,273,715.20 = 11,988,076.80/x
  3. Step 3: Cross multiply
    12,179,366.40x = 18,273,715.20 × 11,988,076.80
  4. Step 4: Simplify right side
    12,179,366.40x = 219,066,701,238,927.38
  5. Step 5: Solve for x
    x = 219,066,701,238,927.38/12,179,366.40
  6. Step 6: Final answer
    x = 17,986,707.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.